YARMOUTH PORT — Two women were taken to the hospital after a head-on collision Saturday night on North Dennis Road.

The accident was called in at 9:51 p.m. near the intersection with Hummock Lane, Yarmouth police Sgt. Thomas Hennessey said.

A 2012 Hyundai driven by 63-year-old Lorraine Petrone of South Yarmouth and a 2011 Volkswagen driven by 58-year-old Donna Howard of Dennis had collided head-on, Hennessey said.

It was not possible to say for sure which vehicle crossed over the yellow line because both drivers sustained serious injuries and were quickly taken to the hospital, Hennessey said.

The accident is under investigation and any charges, if filed, will come after an accident reconstruction, he said.

A Yarmouth fire official said he did not have any information on the accident this morning, including where the women were taken for treatment. Howard was taken to Cape Cod Hospital and later transferred to another hospital, Cape Cod Hospital spokeswoman Robin Lord said. Lord said Petrone was not taken to Cape Cod Hospital.

A spokeswoman for Brigham and Women's Hospital in Boston confirmed Howard and Petrone were there Sunday afternoon. Howard was in stable condition and the spokeswoman described Petrone's condition as good.